3.19.63 70113 - VSTP ISUP Stack Event Queue Utilization

Alarm Group

vSTP

Description

The percent utilization of the VSTP MPs ISUP Stack Event Queue is approaching its maximum capacity.

Severity

Major

Instance

None

HA Score

Normal

Auto Clear Seconds

0 (zero)

Throttle Seconds

86400

OID

vSTPVstpIsupStackEventQueueUtilNotify

Recovery:

1. Identify the affected MP and review VstpISUPEventQueue utilization and queue growth trend.
2. Correlate it with ISUP message rate, CPU utilization, link/association status, and ISUP decode/encode or routing events.
3. Check whether traffic is concentrated on one MP or whether an adjacent node, link, or transport condition is slowing queue processing.
4. Restore the underlying link, association, peer, or MP condition; correct traffic imbalance only through approved change control.
5. Verify queue utilization falls below the clear threshold and the alarm clears.
6. Escalate with queue, traffic, and related SS7 alarm evidence if the condition persists.
7. It is recommended to contact My Oracle Support if further assistance is needed.